New Revised Standard Version
But now, if your land is unclean, cross over into the LORD’s land where the LORD’s tabernacle now stands, and take for yourselves a possession among us; only do not rebel against the LORD, or rebel against us by building yourselves an altar other than the altar of the LORD our God.

Contemporary English Version
If you don't think your land is a fit place to serve God, then move across the Jordan and live with us in the LORD's own land, where his sacred tent is located. But don't rebel against the LORD our God or against us by building another altar besides the LORD's own altar.

New American Bible
If you consider the land you now possess unclean, cross over to the land the LORD possesses, where the tabernacle of the LORD stands, and share that with us. But do not rebel against the LORD, nor involve us in rebellion, by building an altar of your own in addition to the altar of the LORD, our God.

Douay-Rheims Bible
But if you think the land of your possession to be unclean, pass over to the land wherein is the tabernacle of the Lord, and dwell among us: only depart not from the Lord, and from our society, by building an altar beside the altar of the Lord our God.

But if you think the land of your possession to be unclean, pass over to the land wherein is the tabernacle of the Lord, and dwell among us: only depart not from the Lord, and from our society, by building an altar beside the altar of the Lord our God.

unclean

Exodus 15:17 Thou shalt bring them in, and plant them in the mountain of thy inheritance, in thy most firm habitation, which thou hast made, O Lord; thy sanctuary, O Lord, which thy hands have established.

Leviticus 18:25-28 And with which the land is defiled: the abominations of which I will visit, that it may vomit out its inhabitants. . . .

Amos 7:17 And now hear thou the word of the Lord: Thou sayest, thou shalt not prophesy against Israel, and thou shalt not drop thy word upon the house of the idol.

Acts 10:14,15 But Peter said: Far be it from me. For I never did eat any thing that is common and unclean. . . .

Acts 11:8,9 And I said: Not so, Lord: for nothing common or unclean hath ever entered into my mouth. . . .

wherein

Joshua 18:1 And all the children of Israel assembled together in Silo, and there they set up the tabernacle of the testimony, and the land was subdued before them.

Leviticus 17:8,9 And thou shalt say to them: The man of the house of Israel, and of the strangers who sojourn among you, that offereth a holocaust or a victim, . . .

Deuteronomy 12:5,6 But you shall come to the place, which the Lord your God shall choose out of all your tribes, to put his name there, and to dwell in it: . . .

2 Chronicles 11:13,16,17 And the priests and Levites, that were in all Israel, came to him out of all their seats, . . .